Disposable stapler



FIG. 1 is a right side elevational view of a disposable stapler showing my new design, the opposite side being a mirror image;

FIG. 2 is a rear, top, right side perspective view thereof;

FIG. 3 is a front, bottom, left side perspective view thereof; and

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a disposable stapler, as shown and described. 